The SX230 HS has some of the best photo quality I've seen from a compact megazoom, particularly at higher ISOs. While photos do get softer and noisier above ISO 200--typical for point-and-shoots--ISO 400 and 800 are still very usable. The noise and noise reduction are well balanced so you still get good color and detail at these higher sensitivities. Colors desaturate some at ISO 1,600 and 3,200, subjects look very soft, and detail is greatly diminished, but photos are still usable at small sizes for prints or on a display. Basically, if you need to shoot in low light or want to freeze action, this camera is one of the best options in its class.